docs: def get_second_pass_opts_peakrms(self):
          """
          Set the adjustment gain based on chosen option and mean/max volume,
          return the matching ffmpeg volume filter.
          """
          normalization_type = self.media_file.ffmpeg_normalize.normalization_type
          target_level = self.media_file.ffmpeg_normalize.target_level
  
          if normalization_type == 'peak':
              adjustment = 0 + target_level - \
                  self.loudness_statistics['max']
          elif normalization_type == 'rms':
              adjustment = target_level - \
                  self.loudness_statistics['mean']
          else:
              raise FFmpegNormalizeError(
                  "Can only set adjustment for peak and RMS normalization"
              )
  
          logger.info(
              "Adjusting stream {} by {} dB to reach {}"
              .format(self.stream_id, adjustment, target_level)
          )
  
          if self.loudness_statistics['max'] + adjustment > 0:
              logger.warning(
                  "Adjusting will lead to clipping of {} dB"
                  .format(self.loudness_statistics['max'] + adjustment)
              )
  
          return 'volume={}dB'.format(adjustment)